I have a Sitram Catering line frying pan and although it cooks wonderful overall, the gap between the copper plate on the bottom and the side of the pan results in a major cleaning problem. For example, tonight I made a stir fry in it and although cleaning the bottom of the pan was easy, it took me a half half and half a can of Bar Keepers Friend to get the sides clean. This was with some serious scrubbing and it's still not 100% clean.
Can I use Brillo on this or will that ruin the pan? Anyone else with Sitram cookware have this problem?